@article{ref1,
title="Fewer road crashes in the year after a medical warning",
journal="BMJ",
year="2012",
author="",
volume="345",
number="online",
pages="e6596-e6596",
abstract="<p>In 2006 the government of Ontario, Canada, introduced financial incentives to encourage doctors to warn patients who may be unfit to drive. Medical warnings have been recorded ever since . . . </p> <p>Language: en</p>",
language="en",
issn="0959-535X",
doi="10.1136/bmj.e6596",
url="http://dx.doi.org/10.1136/bmj.e6596"
}